Objective To explore the effects of a offline + online cardiopulmonary resuscitation（CPR） training based on forgetting curve in community residents. Methods Residents in 3 communities were recruited by convenience sampling and CPR training was conducted among these residents. First off-line intensive theoretical and skill training was carried out. The online training was then provided on the 1st day,2nd day,4th day,6th day,15th day,30th day,60th day,and 90th day. The online-training included micro-videos and CPR educational games. The CPR knowledge and self-rated CPR ability were assessed before the training,after the offline training and after the online training. The CPR skills were evaluated after the offline training and the online training. Results A total of 67 residents participated in the whole training and completed the assessment. According to the trend chi-square test,after the training,the correctness of the theoretical knowledge of each item of CPR increased linearly among the community residents（P<0.05）. The skill assessment score of community residents after offline training was（7.88±1.30）,and after online training it was（8.03±1.38）. The proportion of community residents who believed that they could do CPR correctly increased from 6%（4/67） before the training to 100%（67/67） after the training. Conclusion The application of offline + online CPR training based on forgetting curve can improve the CPR knowledge and skills of community residents and increase residents’ willingness and behavior to perform first aid.